diff --git a/Makefile b/Makefile
index 9480e419..d1dd35c9 100644
--- a/Makefile
+++ b/Makefile
@@ -94,7 +94,8 @@ TESTS_DEPS += $(DEPS)
 MANPAGE := mergerfs.1
 CPPFLAGS ?=
 override CPPFLAGS += \
-	-D_FILE_OFFSET_BITS=64
+	-D_FILE_OFFSET_BITS=64 \
+	-DBOOST_UNORDERED_DISABLE_PARALLEL_ALGORITHMS
 CFLAGS ?= \
 	$(OPT_FLAGS) \
 	-Wall \
diff --git a/buildtools/build-mergerfs b/buildtools/build-mergerfs
index 8387f116..75ac36c2 100755
--- a/buildtools/build-mergerfs
+++ b/buildtools/build-mergerfs
@@ -38,18 +38,27 @@ elif [ -e /sbin/apk ]; then
 elif [ -e /usr/sbin/pkg ]; then
     echo "NOT YET SUPPORTED"
     exit 1
+elif [ -e /usr/bin/pacman ]; then
+    make tarball
 else
     echo "NOT YET SUPPORTED"
     exit 1
 fi
 
 echo "Copy packages to host..."
-find "${BUILDDIR}" \
-     -type f \
-     \( -name "*.deb" -or -name "*.rpm" \) \
-     -not -name "*dbgsym*" \
-     -not -name "*sym*" \
-     -not -name "*src.rpm" \
-     -exec cp -v {} /build/ \;
+if [ -e /usr/bin/pacman ]; then
+    find "${BUILDDIR}" \
+         -type f \
+         -name "*.tar.gz" \
+         -exec cp -v {} /build/ \;
+else
+    find "${BUILDDIR}" \
+         -type f \
+         \( -name "*.deb" -or -name "*.rpm" \) \
+         -not -name "*dbgsym*" \
+         -not -name "*sym*" \
+         -not -name "*src.rpm" \
+         -exec cp -v {} /build/ \;
+fi
 
 exit 0
diff --git a/buildtools/build-release b/buildtools/build-release
index 51443b15..d72054f9 100755
--- a/buildtools/build-release
+++ b/buildtools/build-release
@@ -47,12 +47,23 @@ def build(git_repo,
 
 
 def setup():
-    args = ['sudo',
-            'apt-get',
-            'install',
-            '-fy',
-            'qemu-user-static',
-            'qemu-user-binfmt']
+    # Detect distribution
+    if os.path.exists('/usr/bin/apt-get'):
+        args = ['sudo',
+                'apt-get',
+                'install',
+                '-fy',
+                'qemu-user-static',
+                'qemu-user-binfmt']
+    elif os.path.exists('/usr/bin/pacman'):
+        args = ['sudo',
+                'pacman',
+                '-Sy',
+                '--noconfirm',
+                'qemu-user-static']
+    else:
+        print("Unsupported distribution for setup")
+        sys.exit(1)
     print(args)
     subprocess.run(args)
 
diff --git a/buildtools/install-build-pkgs b/buildtools/install-build-pkgs
index 1b00faeb..20eb3bba 100755
--- a/buildtools/install-build-pkgs
+++ b/buildtools/install-build-pkgs
@@ -34,4 +34,6 @@ elif [ -e /sbin/apk ]; then
 elif [ -e /usr/sbin/pkg ]; then
     pkg install \
         git gmake gcc
+elif [ -e /usr/bin/pacman ]; then
+    pacman -Sy --noconfirm base-devel git fakeroot
 fi
diff --git a/buildtools/install-build-tools b/buildtools/install-build-tools
index 2e2debef..ecab01de 100755
--- a/buildtools/install-build-tools
+++ b/buildtools/install-build-tools
@@ -16,4 +16,6 @@ elif [ -e /sbin/apk ]; then
         python3 \
         qemu-user-static \
         podman
+elif [ -e /usr/bin/pacman ]; then
+    pacman -Sy --noconfirm qemu-user-static podman
 fi
diff --git a/vendored/libfuse/Makefile b/vendored/libfuse/Makefile
index 95ebf24c..9cc09c16 100644
--- a/vendored/libfuse/Makefile
+++ b/vendored/libfuse/Makefile
@@ -96,7 +96,9 @@ else
 STATIC_FLAGS :=
 endif
 
-CPPFLAGS ?=
+CPPFLAGS ?= \
+	-D_FILE_OFFSET_BITS=64 \
+	-DBOOST_UNORDERED_DISABLE_PARALLEL_ALGORITHMS
 CFLAGS ?= \
 	$(OPT_FLAGS) \
 	$(LTO_FLAGS) \